Drag-saw clamping device



Feb. 27,1923. 1, 46,452.

G. E. CORSON.

. DRAG SAW CLAMPING 'DEVICE.

' FlLED APR. 19. 1920. 2 SHEETSSHEET 1.

Elvwemtm George E. Como)? L m V E D NG flwm P 0M M .6 E m s G A R D Feb.27, 1923.

2 SHEETS-SHEET 2.

FILED APR-19.1920.

v snwnm Geo/ye 5. Console (Tum Patented 2'7, i923.

4r a sr GEORGE consort, or RATHDRUM, rnarro. i l

v I v 4,446,452

err ores DRAG-SAW cLAMrine DEVICE.

Application filed April 19, 1920. Serial No. 3?4,S47.

foundation or base fora power driven, portable, sawing machine, of thedrag saw type. The primary object of the invention is the provision ofan attaching device applicable to the fallen timber to be sawed, forsupporting the saw and its motor, which device is comparatively simplein construction and operation, light in weight, strong, and durable, andellicient in performing its required functions.

To this end the invention consists in certain novel combinations andarrangements of parts whereby the attaching device, when applied to alog or fallen timber, supports one end of the platform for the sawmachine motor, by its connection with the log or timber, while the otherend of the platform is properly supported from the ground.

In the accompanying drawings I have illustrated the physical embodimentof my invention in which the parts are combined and arranged accordingto the best mode I have-so far devised for the practical application ofthe principles of my invention.

Figure 1 is a view in side elevation illustrating the subject matter ofmy invention in operative position and attached. to a log to be sawed,part of the saw and part of the machinery supporting platform beingindi- (rated.

Figure 2' is a perspective view of the device, detached.

Figure 3 is a perspective view of a well known type of drag saw, withthe clamping device of my invention shown applied thereto in operativeposition.

The invention is particularly applicable for use in sawing fallen timberor logs as in dicated at L, and a saw of the drag saw type is supportedfrom the platform P, the saw and platform forming parts of a port ablesawing machine of well known type for sawing timber in the forests. Inactual use,

the platform upon which the saw machinery is supported, as indicatedatP, is of V-shape, lying horizontal with the diverging ends of theplatform supported from the ground by suitable posts or uprights, whilethe apex end of the platform is directly supported from the log L, inorder that the saw S may be operated or reciprocated by its motor.

lnFigure 3 the position of the saw platform or frame P is reversed, andthe legs of this well known type of saw frame or platform are resting onthe log'with the apexend of the platform supported from the ground.

For attachingthe platform and support ing it from the log I utilize thedevice of my invention, which is manually operable through theinstrumentality of the lever 1 of suitable dimensions, and provided witha rigid end jaw 2 having a sharpenedchisel edge to engage and enter thelog as indicated. The handle end 3 of the lever'is of sufficient lengthto afford the application of the required manual power in looking orsecuring the attachment to the log, and the lever is equipped with ahinged jaw or lever arm l: pivoted at 5 to the lever, the chisel edgebof the j aw being adapted to enter the log opposite to the fixed jaw asseen in Figures 1 and 3. Thus it will be seen that in applying thedevice to a log, the lever and lever arm are spread to embrace the log,and then by pulling on the lever, to the left in Figures 1 and 3, thetwo sharpened edges of the jaws are caused to enter the log at oppositesides, thus embedding the jaws in the log as a support for the platform.

The lever and its hooked arm are held in locked position by means of thepawl or dog 7 having a forked end 8 to engage over the lever arm withone of the rack teeth 9 thereon. By means of the pivot pin 10, andselected holes 11 in the lever and 12 in the pawl, the latter may beadjusted to various conditions when, the attachment is locked todifferent sizes'of logs, thus either shortening or lengthening the reachof the pawl to engage various teeth of the rack on the lever arm. Thepawl holds the two members 1 and 4: of the device rigidly and securelyin place, and the attachment thus affords a stable support for theplatform P as in l igures l and In Figure 1 the platform is suspended atits pointed end from the lever by means ofa pair of links 13, 1.3,

eonnecting the lever and clevis, together with a eepqnding a h iameter-HM 0s. The

nks-13; suc y dj etii e epe iqns. wil

engageme th t e. leepivoted at let to the lever, and similarly "pivotedat 15 to the elevis or attaching irons or straps 16 that are bolted tothe platform P. a l

Inasmuch as a slight movement of the supporting platform results inderanging the saw machinery, with the consequent binding or possiblebreaking of the saw,"it is absolutely essential that the platformbesupported with stability and rigidity'from hegliountt l; 1Q .-t r e"- Vhi de ir d result isaccomplished by the utilization oi my device whiehrot only holds the platforlnas a substantial;foundation for the mar.elnnery, butprevents the log. tronr roll ng or otherwise moving, andthe naturaltenw -l1 0 d. 01 p t rm r m to pull down on the lever inFigure 1 also assists in; holgilingthe lever audits armin The forked orbif ufeatedends otthe pawl infleonjunetiou h he eve and; ever irm assi teld.-

ingthese. p r s. alinect nd P e v b e" of lateral shifting, and the twolinks, 13

the lever. which; they] embrace, hold the minted, end f he p a or frigindl eb SWins t p vot pe nt M513. ndi f ou i the jaws 2 and 6 are spreadapart or brought together as required.

Having thus fully described my invention, what I claim as new and desireto secure by Letters Patent is l. The combination with the supportingplatform. of a lever and pivotal link connection between the platformand lever, said leverhaving a aw adapted to engage a leg as described, asecond jaw pivoted on said lever and opposed thereto in its action onthe 1 log, and means for; holding, said lever and pivoted jaw member inloolged position,

T e o b n ion. with a r lllill tfil l platform of a lever and a,pivotal. link connection between said lever and platform, a

divergent lever arm pivoted on thedlever; sharpened jaws at the end oithetleverand lever arm respectively, a pawl; p voted on the lever, rackteeth on the l ever arm tooo;

aetwithsaid pawl and meansfor he p a l uPPQrtQt he P WL,

h om ne-e 1 f ar uab e Sevi le ac l e chm nt wi ha epp fimg-vp et iormof a straight arm lever; having sharpened hooked, end, a clevis on t lie;plat{ form a pair of links pivotedzto the llever iand totheielevisa'nd located at the si des'o f; the

lever, a lever arm pivoted to the leverflandi formed with raek teeth,asharpened hoe gend on the lever arm, a pivoted;

the lever adapted to engage the teeth lever arm, and said lever and pavl pr oegg; CORSQN;

